Open
Show sequence-development graph
| n | Status | Digits | Term | Factorization |
|---|---|---|---|---|
| 0 | Fully factored | 5 | 43367 | 17×2551 |
| 1 | Fully factored | 5 | 51037 | 7×23×317 |
| 2 | Fully factored | 7 | 2536467 | 3×845489 |
| 3 | Fully factored | 8 | 16909783 | 11×163×9431 |
| 4 | Fully factored | 8 | 75451271 | 7×10778753 |
| 5 | Fully factored | 9 | 215575067 | 23×29×323201 |
| 6 | Fully factored | 11 | 51712171623<11> | 32×7×820828121 |
| 7 | Fully factored | 13 | 6566624970…63<13> | 198659×33054757 |
| 8 | Fully factored | 15 | 1057752225…59<15> | 83×709×1797461597<10> |
| 9 | Fully factored | 16 | 5751877110…83<16> | 7×200341×4101490609<10> |
| 10 | Fully factored | 18 | 2624953989…27<18> | 761×534173×645736159 |
| 11 | Fully factored | 20 | 1653084567…61<20> | 7×80809×259937×112426631 |
| 12 | Fully factored | 22 | 1151248702…87<22> | 33×5937599651<10>×7181157931<10> |
| 13 | Fully factored | 25 | 1470701144…63<25> | 3×52057×9417248684…53<19> |
| 14 | Fully factored | 26 | 3013519579…43<26> | 3×29021×1666991×2076381421…71<15> |
| 15 | Composite | 28 | 2126214576…23<28> | 3×43×1648228353…87<26> |
| ↳ | Open Open - the last known term is composite and not yet fully factored. | |||
Open end - submit a factor of the remaining composite
(26 digits) of term #15:
16482283535071971894354887
Check for factors - let the server run a small P-1 / P+1 / ECM step on the composite:
From the command linefdb · curl
fdb
fdb seq view '43367' --type 70 --part last20
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"sequence_view","params":{"start":{"expr":"43367"},"type":70,"part":"last20","fr":0}}'